Nguyễn, N. V., Trần, T. T. H., Pham, K. B. T., Le, N. T. T., & Vu, D. N. (2025). INVESTIGATION OF EUSTACHIAN TUBE DYSFUNCTION IN PATIENTS WITH CHRONIC RHINOSINUSITIS USING THE ETDQ-7 QUESTIONNAIRE. Vietnam Journal of Otorhinolaryngology - Head and Neck Surgery, 70(69), 25-32. https://doi.org/10.60137/tmhvn.v70i69.208